USR IOT USR-GPRS232-730 - Device Functions; Setup Process; Work Modes

USR-GPRS232-730 User Manual h.usriot.com
Jinan USR IOT Technology Limited / 45 www.usriot.com
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3.1. Setup Process
USR-GPRS232-730 will automatically connect to GPRS network and server, get into correct work mode
and open serial port according to the pre-set parameters.
Pre-set parameters
 Work mode
 Network transparent transmission mode
 HTTPD mode
 SMS transparent transmission mode
 Default TCP/UDP connection
 Protocol
 Connection (Long/Short)
 Destination port
 Destination IP
 UART parameters
 Baud rate
 Data bit
 Parity bit
 Stop bit
 Hardware flow control
Setup and restart, module will work according to pre-set parameters.
3.2. Work mode
There are 3 work modes in total

Network transparent transmission mode

HTTPD mode

SMS transparent transmission mode
Switching Work Mode
Customers can change work mode by sending AT+WKMOD
Work mode
Command
SMS message transmission mode
AT+WKMOD=”SMS”{CR}
Network transmission mode
AT+WKMOD=”NET”{CR}
HTTPD mode
AT+WKMOD=”HTTPD”{CR}
<Note>
After setting, user need to restart module.
{CR} means carriage return, hex number is 0x0D.
More details of AT commands, please refer to chapter 4.1.